CVE-2025-57919
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDeserialization of Untrusted Data vulnerability in ConveyThis ConveyThis conveythis-translate allows Object Injection.This issue affects ConveyThis: from n/a through <= 269.1.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA deserialization vulnerability exists in the ConveyThis translation plugin where untrusted data is being deserialized without proper validation, allowing an attacker to inject PHP objects. This type of vulnerability can potentially lead to remote code execution if certain magic methods or POP chains are present in the application.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm ConveyThis plugin is installedCheck your WordPress/website plugin directory or codebase for the ConveyThis translation plugin files. Look for directories or files containing 'conveythis' in the name.Affected if ConveyThis plugin files are present on the system
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Identify installed ConveyThis versionLocate the main plugin file (typically in the plugin root directory) and read the version header from the file comments, or check the plugin version from your website's admin panel plugin list.Affected if The version number is found to be lower than 269.2 (e.g., 269.1, 269.0, or any version below 269.2)
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Locate the vulnerable deserialization codeSearch the ConveyThis plugin files for the presence of unserialize() function calls. Use a grep command or file search for 'unserialize' within the plugin directory.Affected if An unserialize() call exists in the plugin code and accepts user-controlled input without validation
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Verify if user input reaches the deserialization functionTrace the data flow from HTTP request parameters (GET, POST, COOKIE, or specific plugin endpoints) to the unserialize() call identified in the previous step. Examine the plugin's PHP files for code paths that pass request data to unserialize().Affected if User-supplied input from HTTP requests (such as language selection parameters or translation settings) can reach the unserialize() function without sanitization
A system is affected if the ConveyThis plugin is installed with a version lower than 269.2 and the plugin code contains an unserialize() call that processes untrusted user input from HTTP requests.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to a patched version of ConveyThis (version 269.2 or higher). If no patch is available, review and sanitize all data passed to deserialization functions, preferably by replacing unserialize() with json_decode() or implementing allowlist validation.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-57919 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-57919 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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